HP 6125G HP 6125G & 6125G/XG Blade Switches High Availability Configur - Page 18
Configuration guidelines, Configuration procedure
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CAUTION: Use this function with caution, because enabling Ethernet OAM remote loopback impacts other services. When you enable Ethernet OAM remote loopback on a port, the port sends Loopback Control OAMPDUs to a remote port, and the remote port enters the loopback state. The port then sends test frames to the remote port. By observing how many of these test frames return, you can calculate the packet loss ratio on the link to evaluate the link performance. You can enable Ethernet OAM remote loopback on a specific port in user view, system view, or Layer 2 Ethernet interface view. The configuration effects are the same. Configuration guidelines • Ethernet OAM remote loopback is available only after the Ethernet OAM connection is established and can be performed only by Ethernet OAM entities operating in active Ethernet OAM mode. • Remote loopback is available only on full-duplex links that support remote loopback at both ends. • Ethernet OAM remote loopback must be supported by both the remote port and the sending port. • Enabling Ethernet OAM remote loopback interrupts data communications. After Ethernet OAM remote loopback is disabled, all the ports involved will shut down and then come up. Ethernet OAM remote loopback can be disabled by any of the following actions: executing the undo oam enable command to disable Ethernet OAM; executing the undo oam loopback interface or undo oam loopback command to disable Ethernet OAM remote loopback; and Ethernet OAM connection timing out. • Ethernet OAM remote loopback is only applicable to individual links. It is not applicable to link aggregation member ports or service loopback group member ports. In addition, do not assign ports where Ethernet OAM remote loopback is being performed to link aggregation groups or service loopback groups. For more information about link aggregation groups and service loopback groups, see Layer 2-LAN Switching Configuration Guide. • Enabling internal loopback test on a port in remote loopback test can terminate the remote loopback test. For more information about loopback test, see Layer 2-LAN Switching Configuration Guide. Configuration procedure To enable Ethernet OAM remote loopback in user view: Task Enable Ethernet OAM remote loopback on a specific port. Command oam loopback interface interface-type interface-number Remarks Disabled by default. To enable Ethernet OAM remote loopback in system view: Step Command 1. Enter system view. system-view 2. Enable Ethernet OAM remote oam loopback interface loopback on a specific port. interface-type interface-number Remarks N/A Disabled by default. To enable Ethernet OAM remote loopback in Layer 2 Ethernet interface view: 11